﻿// Spun AJAX Framework
// Copyright (C) 2008 Blake Hegerle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Formality.FormalSystem;

namespace Formality.Levels
{
    public class FullEnumerator : IEnumerable<Sentence>
    {
        public FullEnumerator()
        {
            Levels = (from LevelName in LevelNames
                      select new LevelEnumerator(LevelName))
                      .ToList();
        }

        #region IEnumerable<Sentence> Members

        public IEnumerator<Sentence> GetEnumerator()
        {
            foreach (var Level in Levels)
                foreach (var Sentence in Level.Sentences)
                    yield return Sentence;
        }

        #endregion

        #region IEnumerable Members

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return GetEnumerator(); }

        #endregion

        public static IEnumerable<string> LevelNames
        {
            get
            {
                foreach (var i in new[] { 1, 2, 3, 4, 5, 9 })
                    yield return string.Format("{0:000}.xml", i);
            }
        }

        private IEnumerable<LevelEnumerator> Levels;
    }
}
